2. Cryptopterus macrocephalus (Blkr.). 



Kryptopterichthys macrocephahts Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, 



p. 293. All. Ichth. IT. 1862, p. 89. 



Cryptopterus macrocephalus Giinther, Cat. Brit. Mus. V. 1864, p. 41. 

 Cryptopterus bicirrhis Popta, Notes Leyden Mus. XXVII. 1906, p. 26 (not of C.V.). 



B. 910; D. 12; A. 52; P. I. 10; V. 6. 



Elongate. Dorsal profile convex, slightly sloping down to 

 the snout. Height 4 ! / 2 4 >2 /. v head 5 5 ! / 3 . Eye 3 3 ! / 2 , nearly 

 equal to snout, situated behind cleft of mouth, only a small 

 part of the eye below the level of the cleft of the mouth, 

 their distance across the convexity of the interorbital space 

 about twice their diameter. Maxillary barbels extending to 

 the end of the first anterior third of the anal. Mandibulary 

 barbels nearly as long as eye. Dorsal just in front of ventrals. 

 Anal free from caudal but connected with it by a membrane. 

 Length of ventrals 2 ! / 2 times in that of pectorals, which are 

 about equal to length of head. The osseous part of pectoral spine 

 about as long as head without snout. Caudal deeply incised. 

 Teeth in the jaws in a narrow crescentic band. Vomerine 

 teeth in a small patch, which is longer than broad. Colour 

 brownish marmorated, dorsal surface darkest. Fins light brow- 

 nish. Anal with a median longitudinal dark line. Length 

 about 1 10 mm. 



Habitat: Sumatra (Padang?, Djambi!); Borneo (Mahakam). 



In fresh water. 



3. Cryptopterus bicirrhis (C. V.). 



Silurus bicirrhis Cuvier & Valenciennes, Hist. Nat. Poiss. XIV. 1839, p. 367. 

 Silurus palembangensis Bleeker, Nat. Tijdschr. Ned. Indie, III. 1852, p. 584. 

 Kryptopterichthys palembangensis Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 



1858. p. 290. Atl. Ichth. II. 1862, p. 88. 

 Kryptopterichthys bicirris Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 1858^.292. 



All. Ichth. II. 1862, p. 89. 



Cryptopterus amboinensis Giinther, Cat. Brit. Mus. V. 1864, p. 40. 

 Cryptoptertis palembangensis Giinther, Cat. Brit. Mus. V. 1864, p. 40. 

 Cryptopterus bicirrhis Giinther, Cat. Brit. Mus. V. 1864, p. 41. 

 Cryptopterus bicirris Vinciguerra, Ann. Mus. Civ. Geneva XVI. 1880, p. 1 68. 

 Kryptopterus palembangensis Fowler, Proc. Acad. Nat. Sc. Phil. (2), LVIII. 



1905, p. 468. 



B. 89; D. I; A. 5370; P. I. II 12; V. 67. 

 Elongate. Dorsal profile more or less convex, sloping down 



